resources moved off player onto a synced trait

OpenRA.Game/WorldUtils.cs

@@ -241,5 +241,12 @@ namespace OpenRA
 		{
 			return new float2(Gauss1D(r, samples), Gauss1D(r, samples));
 		}
+
+		public static List<PlayerColorPaletteInfo> PlayerColors(this World world)
+		{
+			return world.WorldActor.Info.Traits.WithInterface<PlayerColorPaletteInfo>()
+				.Where(p => p.Playable)
+				.ToList();
+		}
 	}
 }